Relevant bibliographies by topics / Iron Knob

Academic literature on the topic 'Iron Knob'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Iron Knob"

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Bourne, J. A., and C. R. Twidale. "Geomorphological development of the Baxter Hills, a conglomeratic upland near Iron Knob, South Australia." Zeitschrift für Geomorphologie 47, no. 3 (September 26, 2003): 351–71. http://dx.doi.org/10.1127/zfg/47/2003/351.

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Cameron, Judith. "Iron and cloth across the Bay of Bengal: new data from Tha Kae, central Thailand." Antiquity 85, no. 328 (May 2011): 559–67. http://dx.doi.org/10.1017/s0003598x00067946.

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An important group of spindle whorls found at Tha Kae in Thailand carries traces suggesting the use of iron spindles, and includes an unusual type of whorl shaped like a door knob. The author explores the implied contacts reaching into south China, but is also able to add a probable link with India in the early first millennium AD, well in advance of the better known Dvaravati period (sixth–thirteenth centuries AD).
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Hill, J. D., Christopher Evans, Mary Alexander, C. Eden, and C. A. Shell. "The Hinxton Rings – A Late Iron Age Cemetery at Hinxton, Cambridgeshire, with a Reconsideration of Northern Aylesford-Swarling distributions." Proceedings of the Prehistoric Society 65 (1999): 243–73. http://dx.doi.org/10.1017/s0079497x00002012.

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The excavation of a 1st century BC cremation cemetery having ring-ditch surrounded interments is reported. One of its two richly accompanied burials included an unparalleled drapery-cast stud/knob – an extraordinary object found within a cemetery with uniquely delineated graves. Given its location on the northern fringe of the distribution of Aylesford-Swarling cremation burials, the site prompts questions of core/periphery interrelationships, regionally and group definition.
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Tunnell, Bolorchimeg N., Marek Locmelis, Cheryl Seeger, Ryan Mathur, István Dunkl, Brandon Sullivan, and Lisa Lori. "The Pilot Knob iron ore deposits in southeast Missouri, USA: A high-to-low temperature magmatic-hydrothermal continuum." Ore Geology Reviews 131 (April 2021): 103973. http://dx.doi.org/10.1016/j.oregeorev.2020.103973.

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Childress, Tristan M., Adam C. Simon, Warren C. Day, Craig C. Lundstrom, and Ilya N. Bindeman. "Iron and Oxygen Isotope Signatures of the Pea Ridge and Pilot Knob Magnetite-Apatite Deposits, Southeast Missouri, USA." Economic Geology 111, no. 8 (November 16, 2016): 2033–44. http://dx.doi.org/10.2113/econgeo.111.8.2033.

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Tunnell, Bolorchimeg N., Marek Locmelis, Cheryl Seeger, Marilena Moroni, Sarah Dare, Ryan Mathur, and Brandon Sullivan. "The Shepherd Mountain iron ore deposit in Southeast Missouri, USA – An extension of the Pilot Knob magmatic-hydrothermal ore system: Evidence from iron oxide chemistry." Ore Geology Reviews 141 (February 2022): 104633. http://dx.doi.org/10.1016/j.oregeorev.2021.104633.

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Keyser, Ciobanu, Cook, Feltus, Johnson, Slattery, Wade, and Ehrig. "Mineralogy of Zirconium in Iron-Oxides: A Micron- to Nanoscale Study of Hematite Ore from Peculiar Knob, South Australia." Minerals 9, no. 4 (April 19, 2019): 244. http://dx.doi.org/10.3390/min9040244.

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Zirconium is an element of considerable petrogenetic significance but is rarely found in hematite at concentrations higher than a few parts-per-million (ppm). Coarse-grained hematite ore from the metamorphosed Peculiar Knob iron deposit, South Australia, contains anomalous concentrations of Zr and has been investigated using microanalytical techniques that can bridge the micron- to nanoscales to understand the distribution of Zr in the ore. Hematite displays textures attributable to annealing under conditions of high-grade metamorphism, deformation twins (r~85˚ to hematite elongation), relict magnetite and fields of sub-micron-wide inclusions of baddeleyite as conjugate needles with orientation at ~110˚/70˚. Skeletal and granoblastic zircon, containing only a few ppm U, are both present interstitial to hematite. Using laser-ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) spot analysis and mapping, the concentration of Zr in hematite is determined to be ~260 ppm on average (up to 680 ppm). The Zr content is, however, directly attributable to nm-scale inclusions of baddeleyite pervasively distributed throughout the hematite rather than Zr in solid solution. Distinction between nm-scale inclusions and lattice-bound trace element substitutions cannot be made from LA-ICP-MS data alone and requires nanoscale characterization. Scandium-rich (up to 0.18 wt. % Sc2O3) cores in zircon are documented by microprobe analysis and mapping. Using high-angle annular dark field scanning transmission electron microscopy imaging (HAADF-STEM) and energy-dispersive spectrometry STEM mapping of foils prepared in-situ by focused ion beam methods, we identify [011]baddeleyite epitaxially intergrown with [22.1]hematite. Lattice vectors at 84–86˚ underpinning the epitaxial intergrowth orientation correspond to directions of r-twins but not to the orientation of the needles, which display a ~15˚ misfit. This is attributable to directions of trellis exsolutions in a precursor titanomagnetite. U–Pb dating of zircon gives a 206Pb/238U weighted mean age of 1741 ± 49 Ma (sensitive high-resolution ion microprobe U–Pb method). Based on the findings presented here, detrital titanomagnetite from erosion of mafic rocks is considered the most likely source for Zr, Ti, Cr and Sc. Whether such detrital horizons accumulated in a basin with chemical precipitation of Fe-minerals (banded iron formation) is debatable, but such Fe-rich sediments clearly included detrital horizons. Martitization during the diagenesis-supergene enrichment cycle was followed by high-grade metamorphism during the ~1.73–1.69 Ga Kimban Orogeny during which martite recrystallized as granoblastic hematite. Later interaction with hydrothermal fluids associated with ~1.6 Ga Hiltaba-granitoids led to W, Sn and Sb enrichment in the hematite. By reconstructing the evolution of the massive orebody at Peculiar Knob, we show how application of complimentary advanced microanalytical techniques, in-situ and on the same material but at different scales, provides critical constraints on ore-forming processes.
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Vignolini, Caterina. "Context and Shape: Geographical and Chronological Distribution of Handled Stamp Seals in Anatolia and Northern Levant." Asia Anteriore Antica. Journal of Ancient Near Eastern Cultures 4 (January 25, 2023): 135–60. http://dx.doi.org/10.36253/asiana-1599.

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This article focuses on handled stamp seals, their typological classification, archaeological contexts and geographic distribution. By analyzing a total of 679 seals (302 from good archaeological contexts) over a time period from the Early Bronze Age to the Iron Age, it was possible to point out that specific shapes can be considered typical for the Anatolian region, while others were adopted from Anatolia in the Levant or belong to specific site productions. The data have shown that of the three predominant types (Stalk, Domed and Modelled Domed Knob Seals), probably only one passed from Anatolia to the Northern Levant with a consequent proliferation of variants. All other types of handled stamp seals didn’t provide sufficient data in archaeological contexts to better define the dynamics of production or geographical displacement: therefore, it was only possible to present the general data and propose some hypotheses.
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Nold, John L., Paul Davidson, and Mark A. Dudley. "The pilot knob magnetite deposit in the Proterozoic St. Francois Mountains Terrane, southeast Missouri, USA: A magmatic and hydrothermal replacement iron deposit." Ore Geology Reviews 53 (September 2013): 446–69. http://dx.doi.org/10.1016/j.oregeorev.2013.02.007.

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Williams, George E., and Phillip W. Schmidt. "Paleomagnetism of the 1.88-Ga Sokoman Formation in the Schefferville–Knob Lake area, Québec, Canada, and implications for the genesis of iron oxide deposits in the central New Québec Orogen." Precambrian Research 128, no. 1-2 (January 2004): 167–88. http://dx.doi.org/10.1016/j.precamres.2003.09.015.

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Dissertations / Theses on the topic "Iron Knob"

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Anwar, Nasrine. "Artisanat et sociétés en Gaule méridionale à l’âge du Fer (fin du VIIIe s.-fin du IIIe siècle avant notre ère)." Thesis, Montpellier 3, 2014. http://www.theses.fr/2014MON30071.

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Ce travail se veut une synthèse sur l'artisanat de Gaule méridionale entre la fin du VIIIe s. et la fin du IIIe s. av. n. è., thématique encore peu abordée dans son ensemble pour cet espace géographique. Il vise à définir les facteurs de la spécialisation des tâches et des individus et à traiter de l'évolution du travail dans les sociétés indigènes. Successivement, seront approchées les activités associées aux arts du feu la métallurgie, la céramique et le verre - et les productions dérivées du travail vivrier les textiles, le cuir et les matières dures animales -. À chaque fois, il s'agira d'identifier les procédés techniques attestés à l'âge du Fer, d'examiner les degrés de technicité associés à chaque activité et de dépeindre l'environnement dans lequel ces opérations se déroulent. Une fois ces considérations posées et à la lumière de cette documentation, les aspects économiques attachés à la production d'objets manufacturés et notamment le rôle de l'artisanat dans le processus de complexification sociale dans lequel les communautés sont alors engagées seront analysés. Enfin, compte tenu de l'importance fondamentale de la composante sociale dans le développement du travail spécialisé, les thèmes liés aux lieux dédiés à la production et à l'apparition des ateliers, au statut et à la place des artisans ou à l'apprentissage seront tour à tour abordés, parfois pour susciter plus de questions que de réponses
This documentation presents a synthesis concerning the handicrafts of Southern Gaul between the end of the VIIIth and the end of the IIIrd century B.C., a topic that has not been overly dealt with globally with respect to that geographical area. It aims at defining the factors determining the specialization of tasks and individual people as well as discussing the evolution of activities within the indigenous societies. Subsequently the activities associated with the arts of fire will be dealt with, i.e. metallurgy, ceramics and glass as well as the products derived from cottage industry, i.e. textiles, leather and hard materials stemming from animals. There always arises the need of identifying the technical procedures bearing witness to the Iron Age, of examining the degrees of technical achievement associated with each and every activity and of depicting the environment where these operations take place. Once those considerations are established - and in the light of that documentation - we shall analyze the economic aspects underlying the production of hand-made objects and namely the role played by handicrafts in the creation of an ever more complex society made up by the individual communities. Finally, given the fundamental importance of the social component in the development of specialized activities, the topics connected with the actual place of production, with the appearance of workshops, with the status and place of the craftsmen or with the institution of apprenticeship will be alternately dealt with; sometimes giving rise to more questions than answers
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Tanti, D. J. "Biogeochemical and regolith expression of buried non-ferrous mineralisation in the northern Middleback Ranges, Iron Knob North." Thesis, 2011. http://hdl.handle.net/2440/97937.

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South Australia hosts some of the world’s largest non-ferrous mineral deposits. Exploration for such mineralisation systems has so far been impeded by thick regolith that conceals much of the prospective regions throughout Australia. The project tenement studied here is on the Eyre Peninsula at the central northern edge of the Spencer Domain (Middleback Ranges) within the Gawler Craton. It considered highly prospective for mineralization, such as associated with Iron Ore Copper Gold (IOCG) mineralisation. This study provides a preliminary characterisation of the plant biogeochemistry in relation to potential mineralisation sources in the area, and evaluates the potential for plant biogeochemistry to provide an effective and efficient representation of the mineral prospectivity. Three different plant species (Marianna sedifolia, Acacia papyrocarpa and Casuarina pauper) were sampled along east-west transects. Regolith mapping was conducted from aerial imagery of the area and ground-proofing along transects. A landscape geochemical dispersion model was constructed to highlight material flow directions to further understand the regolith units, landform history and its relation to the biogeochemistry of the area. Multi-element plant biogeochemical results show elevated levels of the commodity elements (Cu, Au, U) over known fault structures, the western alluvial system, and surrounding the mineralised Hutchison Group. Three statistical methods were selected to analyse and interpret the data: 1) Normal distribution- two standard deviations; 2) Median absolute deviation; and 3) Normal probability plots & histograms. The median absolute deviation presented consistent parameters for isolating the natural (interpreted natural) uptake of the selected 19 elements. Threshold values displayed limits that were interpreted as showing minimal potential of inhibiting any interpretation of single points of interest or overshadowing any broad scale element trends. Thus this method was utilised in displaying the biogeochemical results. Proposed exploration models for the area include close spaced transect sampling of vegetation along fault structures. Results from this study have implications for the future of mineral exploration, both within this tenement and in other regions comprising similar species and regolith cover. Results demonstrate that biogeochemistry can assist in the exploration of mineral deposits at both the prospect and regional scale. The importance of regolith mapping and developing an understanding for the tenement and regional landscape are important components in identifying likely areas of mineralistion, the success of sampling and result analysis.
Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Earth and Environmental Sciences, 2011
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Thomas, L. M. "Regolith-landforms and plant biogeochemical expression of buried mineralisation targets in the northern Middleback Ranges, (“Iron Knob South”) South Australia." Thesis, 2011. http://hdl.handle.net/2440/97938.

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South of the town Iron Knob on the northern Eyre Peninsula, a tenement scale plant biogeochemical survey and regolith-landform mapping, combined to define areas with elevated Cu, Zn and Au contents that are worthy of follow-up exploration. Plant biogeochemistry was conducted within a 6 Km2 area with 1 Km spacing between each E-W trending transect and 200 m spacing between each sample. A regolith-landform map presents the distribution of regolith materials and associated landscape processes to help constrain geochemical dispersion. A Philips XL30 SEM provided insight into how the plants uptake certain elements and distribute them within the organs structure. Two zones of elevated trace metals (e.g. Cu, Au and Zn) were defined either side of a NW-SE structure crossing over the N-S trending “Katunga‟ ridge. Both targets were located on similar regolith-landform units of sheet-flood fans and alluvial plains. Copper and Zn results were best represented by the western myall species while the bluebush species was best at detecting Au. A follow up study targeting the NW-SE structure with closer sample spacing is recommended in further constraining drilling targets. For the tenement holding company, Onesteel Ltd, these results are significant as they define two new areas of interest for possible IOCG mineralisation. For research purposes the results confirm that plant biogeochemistry can be used as an effective tool for detecting mineralisation along buried structures providing the use of the right species in the area.
Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Earth and Environmental Sciences, 2011
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Bursák, Daniel. "Tuchlovicko v době laténské a době římské: archeologický výzkum z let 1967 a 1968 (A. Knor, J. Zeman)." Master's thesis, 2011. http://www.nusl.cz/ntk/nusl-298218.

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This submitted thesis summarizes archaeological data about Iron Age and roman period settlement activity in the area of Tuchlovický potok downstream. Main focus is given to the elaboration of archaeological excavations, which were carried out in the years 1967 and 1968 by A. Knor and J. Zeman. The excavations followed up a large drain trench between Tuchlovice and Srby (district Kladno, Central Bohemia), where K. Motyková detected in the year 1966 the rests of roman period settlement with organic finds. Thirteen probes unearthed relatively widely spread rests of settlement, which was probably buried by a flood. The analysis of pottery sherds allows dating of the excavated settlement mainly to the 1.st century AD. Sampled wooden finds were submitted to dendrochronological surveys, but the recorded tree ring curve didn't match any so far known. Most important finds are a part of wooden fence and a piece from composite wooden jar. Other wooden artifacts and finds do not allow any functional interpretation. The research carried pointed to a great potential of this site for answering a wide spectrum of questions about prehistorical settlement sites and their relation to environment. The excavations also brought some rarely found organic finds like pollen, rests of plants and some other.
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Books on the topic "Iron Knob"

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Crawford, Roberta. The iron elephant: What you should know about the danger of excess body iron. Glyndon, Md. (P.O. Box 296, Glyndon, MD 21071-0296): Vida Publishing, 1990.

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Farndon, John. Iran: Everything you need to know. Cambridge: Icon Books, 2006.

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Know thine enemy: A spy's journey into revolutionary Iran. Boulder, Colo: Westview Press, 1998.

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Know thine enemy: A spy's journey into revolutionary Iran. New York: Farrar, Straus, and Giroux, 1997.

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The words and music of Dolly Parton: Getting to know country's "Iron Butterfly". Santa Barbara, Calif: Praeger, 2011.

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Baer, Robert. The Devil We Know. New York: Crown Publishing Group, 2008.

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Drahozal, Christopher R. The Iran-U.S. Claims Tribunal at 25: The cases everyone needs to know for investor-state & international arbitration. [Dobbs Ferry, NY?]: Oxford University Press, 2007.

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F, Martin William. The indissoluble knot: King Lear as ironic drama. Lanham, MD: University Press of America, 1987.

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The devil we know: Dealing with the new Iranian superpower. New York: Three Rivers Press, c2008., 2008.

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The devil we know: Dealing with the new Iranian superpower. New York: Crown Publishers, 2008.

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Book chapters on the topic "Iron Knob"

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O’Sullivan, Adrian. "Epilogue: The Need to Know." In Espionage and Counterintelligence in Occupied Persia (Iran), 238–54. London: Palgrave Macmillan UK, 2015. http://dx.doi.org/10.1057/9781137555571_16.

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Kelso, John R. "Big River and Scouting the Southwest Corner." In Bloody Engagements, edited by Christopher Grasso. Yale University Press, 2017. http://dx.doi.org/10.12987/yale/9780300210965.003.0003.

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In this chapter, John Russell Kelso shares his experience at Big River and the Southwest Corner between August and September 1861. Kelso's regiment was sent to Big River, on the Iron Mountain Rail Road, to help fend off an attack by the rebels led by Meriweather Jeff Thompson. He was also ordered by Col. Sempronius H. Boyd to go out in disguise and pass along the entire southern border of Missouri to the Southwest corner, and see if it would be possible for his regiment alone to march through on that line. At Iron Mountain, Kelso and John Newton McConnell went to scout about the country and made one trip to the top of the Pilot Knob. When he arrived in Rolla, Kelso found his regiment already there, waiting orders to move on toward Springfield with John C. Frémont's army.
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Allison, Penelope M. "Casa degli Amanti (I 10,10–11)." In The Insula of the Menander at Pompeii. Oxford University Press, 2007. http://dx.doi.org/10.1093/oso/9780199263127.003.0019.

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Giornali degli Scavi A,VI,7 (Apr. 1929–Dec. 1935): 305–32 (1 Mar.–13 May 1933). Elia 1934: 321–39. The excavations of this house were mainly carried out between March and May 1933, after those of the Casa del Menandro, Casa del Fabbro, and House I 10,8. Excavations to the south of the peristyle garden of the Casa del Menandro, from September 1930, included the upper part of this house. They show comparable attention to the location of finds and the state of the deposit. Description: fragmentary handle. Present location: unknown, not inventoried at time of excavation. Discussion: probably a door handle. Dimensions: l.: 66 mm; diam.: 32 mm. Description: Bronze fitting with a solid spheroid head and shaft of circular section (max. diam.: 9 mm). Traces of iron corroded to the end of the shaft. Shaft incomplete, with a groove just above the extant end. Present location: Pompeii Collection, CB (inv. no. 5551). Discussion: Excavators identified this as a stud. However, it is more likely to be a terminal for an object, such as a steelyard, although it is rather large (see terminal of cat. no. 1778). Dimensions: 100 mm × 60 mm (GdSc). Present location: unknown, not inventoried at time of excavation. Discussion: too small for a furniture base, possibly for a statuette or vessels. Dimensions: h.: 300 mm (GdSc). Description: small amphora. Present location: unknown, not inventoried at time of excavation. Discussion: Too small for a transportation amphora, probably a household storage jar. See discussion on amphora. Dimensions: h.: 100 mm (GdSc). Description: pyramidal loom weight. Present location: unknown, not inventoried at time of excavation. Discussion: Probably similar to cat. no. 904. See discussion on loom weights. Dimensions: l.: 54 mm; preserved h.: 30 mm. Description: Bow-shaped bronze brooch. Bow consisting of a flattened piece of bronze (w.: 7 mm) with a ridge along the centre, decorated with small dots. Horizontal pivot of circular section with an iron pin. Triangular catch-plate terminating in a knob. Pin missing. Present location: Pompeii Collection, CB (inv. no. 5552). Discussion: similar to cat. no. 311 except slightly larger.
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"What do we know now, 3,300 years later?" In Iron from Tutankhamun's Tomb, 31–34. The American University in Cairo Press, 2022. http://dx.doi.org/10.2307/j.ctv2xn164f.13.

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Axworthy, Michael. "Ancient and Islamic Iran." In Iran. Oxford University Press, 2017. http://dx.doi.org/10.1093/wentk/9780190232955.003.0002.

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What do we know about the Indo-European peoples and the origins of Iran? What we know begins with the fact that the Persian language (known to Iranians in their own tongue as Farsi) along with English and most other European languages, as well as Sanskrit,...
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Trollope, Anthony. "‘I Know it Will Do’." In He Knew He Was Right. Oxford University Press, 2008. http://dx.doi.org/10.1093/owc/9780199537709.003.0009.

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MISS STANBURY carried her letter all the way to the chief post-office in the city, having no faith whatever in those little subsidiary receiving houses which are established in different parts of the city. As for the iron pillar boxes* which had been...
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Anderson, Ashaunta. "Iron Supplementation for Breastfed Infants." In 50 Studies Every Pediatrician Should Know, 113–19. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780190204037.003.0017.

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A. Faraj, Safa, and Naeem M. Al-Abedy. "Hepcidin." In Iron Metabolism - A Double-Edged Sword. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.101591.

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The hepcidin is antimicrobial peptide has antimicrobial effects discover before more than a thousand years; it has a great role in iron metabolism and innate immunity. Hepcidin is a regulator of iron homeostasis. Its production is increased by iron excess and inflammation and decreased by hypoxia and anemia. Iron-loading anemias are diseases in which hepcidin is controlled by ineffective erythropoiesis and concurrent iron overload impacts. Hepcidin reacts with ferroportin. The ferroportin is found in spleen, duodenum, placenta, if the ferroportin decrease, it results in the reduced iron intake and macrophage release of iron, and using the iron which stores in the liver. Gene of human hepcidin is carried out by chromosome 19q13.1. It consists of (2637) nucleated base. HAMP gene was founded in the liver cells, in brain, trachea, heart, tonsils, and lung. Changing in the HAMP gene will produce a change in hepcidin function. The hepcidin is made many stimulators are included opposing effects exerted by pathological and physiological conditions. Hepcidin is essential for iron metabolism, understanding stricter and genetic base of hepcidin is crucial step to know iron behavior and reactions to many health statuses.
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Allison, Penelope M. "Casa degli Amanti (I 10,10–11)." In The Insula of the Menander at Pompeii. Oxford University Press, 2007. http://dx.doi.org/10.1093/oso/9780199263127.003.0035.

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There are remains of coarse plaster on the lower parts of the walls of this space and the pavement is of cocciopesto. The excavators removed disturbed volcanic material mixed with plaster, particularly from the south-east corner of this room. A breach in this corner, in the east wall, would have provided access through to room 8. Near the doorway in the south wall, leading to the front hall of this house, were found: an iron handle, probably from the door; a bronze knob terminal, conceivably from a large steelyard; a small travertine base; a storage jar; a clay loom weight; and a bronze fibula. This area has been identified as a shop or workshop. The limited finds conceivably bear witness to some commercial or industrial activity having been carried out here but they are equally domestic in character, as well as fragmentary and loseable. It is quite possible that any commercial or industrial activity which might once have taken place here had ceased prior to the eruption. The walls of this entranceway were decorated in the Second Style and the pavement was of lavapesta. Ling noted repaired damage to the walls of this entranceway, which he initially attributed to the ad 62 earthquake but he has since identified the repairs as modern. The excavators removed volcanic material mixed with plaster and roof tiles from this entranceway. The only finds recorded here seem to have fallen from the upper floor (see below). The walls of this ‘atrium’ were decorated in the Fourth Style which Elia and Ling have dated to after the ad 62 earthquake. The pavement continued that of the entranceway, in lavapesta. The excavators again noted that the volcanic deposit here presented constant signs of disturbance and that nothing was preserved of the stratigraphy. At the centre of this area is a cocciopesto impluvium (inside dimensions: 2.10 m × 1.77 m). A few, scattered, loose finds were recorded in the disturbed volcanic deposit which could conceivably have been from this space (see below). Even considering the finds from disturbed deposits, the paucity of contents here is comparable to the situation in the front hall of the Casa del Menandro but contrasts with that in many other front hall in Pompeian houses.
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Penman, Alan D., Kimberly W. Crowder, and William M. Watkins. "Risk Factors for Cataract." In 50 Studies Every Ophthalmologist Should Know, 33–38. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780190050726.003.0006.

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The Lens Opacities Case-Control Study was a case-control study of general ophthalmology outpatients, 40–79 years of age, designed to identify the main risk factors associated with nuclear, cortical, and posterior subcapsular lens opacities. The study identified associations between cataract and low education, a nonprofessional occupation, intake of vitamins and iron, and body mass. Diabetes was a risk factor for all cataract types except nuclear; use of oral steroids was associated with posterior subcapsular cataract, and use of gout medications with mixed cataract. The associations with nutritional intake and use of multivitamin supplements suggested a potential for modifying cataract risk. The study also suggested a role for other potentially modifiable factors, such as use of some medications and smoking.
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Conference papers on the topic "Iron Knob"

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Nanzad, Bolorchimeg, Marek Locmelis, Brandon James Sullivan, and Ryan Mathur. "THE PILOT KNOB IRON ORE DEPOSIT IN SOUTHEAST MISSOURI, USA: A HIGH-TO-LOW TEMPERATURE MAGMATIC-HYDROTHERMAL CONTINUUM." In GSA Annual Meeting in Phoenix, Arizona, USA - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019am-335523.

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Dovat, L., O. Lambercy, Y. Ruffieux, D. Chapuis, R. Gassert, H. Bleuler, Cl Teo, and E. Burdet. "A Haptic Knob for Rehabilitation of Stroke Patients." In 2006 IEEE/RSJ International Conference on Intelligent Robots and Systems. IEEE, 2006. http://dx.doi.org/10.1109/iros.2006.281778.

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Tada, Naoya, and Takeshi Uemori. "Dimensional Changes of Graphite Flakes and Fracture in Tensile Tests of Gray Cast Iron." In ASME 2018 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/pvp2018-85124.

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Gray cast iron has been used as a component in various mechanical parts, such as the blocks and heads of automobile and marine engines, cylinder liners for internal combustion engines, and machine tool bases. It is desirable because of its good castability and machinability, damping characteristics, and high ratio of performance to cost. On the other hand, the weak graphite flakes present in gray cast iron act as stress concentrators and negatively affect the strength of this material. It is therefore important to know the relationship between the distribution of graphite flakes and the strength or fracture of gray cast iron. In this study, a tensile test of gray cast iron was carried out using a plate specimen in a scanning electron microscope, and the microscopic deformation was observed on the surface of specimen. Particularly, the change in the size of graphite flakes during the tensile test was examined, and the observed trend was discussed. We found from the experimental results that the dimensional changes in the graphite flakes varied in the observed area, and that the final fracture occurred in an area where a relatively large dimensional change was observed. This suggests that the fracture location or the critical parts of gray cast iron, can be predictable from the dimensional changes of the graphite flakes at an early stage of deformation.
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Augugliaro, Federico, Emanuele Zarfati, Ammar Mirjan, and Raffaello D'Andrea. "Knot-tying with flying machines for aerial construction." In 2015 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS). IEEE, 2015. http://dx.doi.org/10.1109/iros.2015.7354218.

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Yan, Mengyuan, Gen Li, Yilin Zhu, and Jeannette Bohg. "Learning Topological Motion Primitives for Knot Planning." In 2020 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS). IEEE, 2020. http://dx.doi.org/10.1109/iros45743.2020.9341330.

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Schlosser, Patrick, and Christoph Ledermann. "Using Diverse Neural Networks for Safer Human Pose Estimation: Towards Making Neural Networks Know When They Don’t Know." In 2020 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS). IEEE, 2020. http://dx.doi.org/10.1109/iros45743.2020.9341634.

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Chen, Zihan, Anand Malpani, Preetham Chalasani, Anton Deguet, S. Swaroop Vedula, Peter Kazanzides, and Russell H. Taylor. "Virtual fixture assistance for needle passing and knot tying." In 2016 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS). IEEE, 2016. http://dx.doi.org/10.1109/iros.2016.7759365.

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Hu, Yang, Lin Zhang, Wei Li, and Guang-Zhong Yang. "Robotic Sewing and Knot Tying for Personalized Stent Graft Manufacturing." In 2018 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS). IEEE, 2018. http://dx.doi.org/10.1109/iros.2018.8594021.

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Lewis, Bennie, and Gita Sukthankar. "Know thy user: Designing human-robot interaction paradigms for multi-robot manipulation." In 2014 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2014). IEEE, 2014. http://dx.doi.org/10.1109/iros.2014.6943179.

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Lu, Bo, Henry K. Chu, and Li Cheng. "Robotic knot tying through a spatial trajectory with a visual servoing system." In 2017 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS). IEEE, 2017. http://dx.doi.org/10.1109/iros.2017.8206461.

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Reports on the topic "Iron Knob"

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Maldonado, Ellen. The Gordian Knot of Strategy: A Mismatch of Unlimited Aims and Limited Means in the Iran-Iraq War. Fort Belvoir, VA: Defense Technical Information Center, January 2001. http://dx.doi.org/10.21236/ada441753.

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Horwitz, Benjamin A., and Barbara Gillian Turgeon. Fungal Iron Acquisition, Oxidative Stress and Virulence in the Cochliobolus-maize Interaction. United States Department of Agriculture, March 2012. http://dx.doi.org/10.32747/2012.7709885.bard.

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Our project focused on genes for high affinity iron acquisition in Cochliobolus heterostrophus, a necrotrophic pathogen of maize, and their intertwined relationship to oxidative stress status and virulence of the fungus on the host. An intriguing question was why mutants lacking the nonribosomal peptide synthetase (NRPS) gene (NPS6) responsible for synthesis of the extracellular siderophore, coprogen, are sensitive to oxidative stress. Our overall objective was to understand the mechanistic connection between iron stress and oxidative stress as related to virulence of a plant pathogen to its host. The first objective was to examine the interface where small molecule peptide and reactive oxygen species (ROS) mechanisms overlap. The second objective was to determine if the molecular explanation for common function is common signal transduction pathways. These pathways, built around sensor kinases, response regulators, and transcription factors may link sequestering of iron, production of antioxidants, resistance to oxidative stress, and virulence. We tested these hypotheses by genetic manipulation of the pathogen, virulence assays on the host plant, and by following the expression of key fungal genes. An addition to the original program, made in the first year, was to develop, for fungi, a genetically encoded indicator of redox state based on the commercially available Gfp-based probe pHyper, designed for animal cell biology. We implemented several tools including a genetically encoded indicator of redox state, a procedure to grow iron-depleted plants, and constructed a number of new mutants in regulatory genes. Lack of the major Fe acquisition pathways results in an almost completely avirulent phenotype, showing how critical Fe acquisition is for the pathogen to cause disease. Mutants in conserved signaling pathways have normal ability to regulate NPS6 in response to Fe levels, as do mutants in Lae1 and Vel1, two master regulators of gene expression. Vel1 mutants are sensitive to oxidative stress, and the reason may be underexpression of a catalase gene. In nps6 mutants, CAT3 is also underexpressed, perhaps explaining the sensitivity to oxidative stress. We constructed a deletion mutant for the Fe sensor-regulator SreA and found that it is required for down regulation of NPS6 under Fe-replete conditions. Lack of SreA, though, did not make the fungus over-sensitive to ROS, though the mutant had a slow growth rate. This suggests that overproduction of siderophore under Fe-replete conditions is not very damaging. On the other hand, increasing Fe levels protected nps6 mutants from inhibition by ROS, implying that Fe-catalyzed Fenton reactions are not the main factor in its sensitivity to ROS. We have made some progress in understanding why siderophore mutants are sensitive to oxidative stress, and in doing so, defined some novel regulatory relationships. Catalase genes, which are not directly related to siderophore biosynthesis, are underexpressed in nps6 mutants, suggesting that the siderophore product (with or without bound Fe) may act as a signal. Siderophores, therefore, could be a target for intervention in the field, either by supplying an incorrect signal or blocking a signal normally provided during infection. We already know that nps6 mutants cause smaller lesions and have difficulty establishing invasive growth in the host. Lae1 and Vel1 are the first factors shown to regulate both super virulence conferred by T-toxin, and basic pathogenicity, due to unknown factors. The mutants are also altered in oxidative stress responses, key to success in the infection court, asexual and sexual development, essential for fungal dissemination in the field, aerial hyphal growth, and pigment biosynthesis, essential for survival in the field. Mutants in genes encoding NADPH oxidase (Nox) are compromised in development and virulence. Indeed the triple mutant, which should lack all Nox activity, was nearly avirulent. Again, gene expression experiments provided us with initial evidence that superoxide produced by the fungus may be most important as a signal. Blocking oxidant production by the pathogen may be a way to protect the plant host, in interactions with necrotrophs such as C. heterostrophus which seem to thrive in an oxidant environment.
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Boustati, Boustati. Narcotics Flows Through Eastern Africa: the Changing Role of Tanzania and Mozambique. Institute of Development Studies, March 2022. http://dx.doi.org/10.19088/k4d.2022.074.

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In the last few decades, the southern route’s use for drug trafficking gained prominence as increased law enforcement and unrest in the Middle East made the traditional ‘Balkan route’ less viable. This southern route transports drugs, mainly heroin, from its production in Afghanistan to Pakistan or Iran, to eastern Africa – including Tanzania and Mozambique- and consequently to South Africa, after which it is moved to Europe (Aucoin, 2018; Otto & Jernberg, 2020). Notable targets of trafficking via the southern route have been the United Kingdom, Belgium, and the Netherlands (UNDOC, 2015). It is difficult to know for certain the quantities of drugs being trafficked through eastern Africa, but the literature puts it at up to 40 tonnes, with 5 of those staying behind, while the rest is transported overseas (Haysom et al., 2018a, 2018b). Due to various political and economic shifts, methamphetamines produced in Afghanistan recently also began to be trafficked alongside heroin shipments through the southern route, with recent estimates putting it at 50% of drugs being trafficked (Eligh, 2021). Most of the literature agrees that, in recent years, drug trafficking routes in eastern Africa have shifted due to political changes, but there is no evidence to suggest that the amount being trafficked have decreased.
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